81565360

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{457}}^1$

素因数の和:590

約数の個数: 80

約数和(自身を含む): 200362176

約数和(自身を除く): 118796816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 97, 115, 184, 194, 230, 368, 388, 457, 460, 485, 776, 914, 920, 970, 1552, 1828, 1840, 1940, 2231, 2285, 3656, 3880, 4462, 4570, 7312, 7760, 8924, 9140, 10511, 11155, 17848, 18280, 21022, 22310, 35696, 36560, 42044, 44329, 44620, 52555, 84088, 88658, 89240, 105110, 168176, 177316, 178480, 210220, 221645, 354632, 420440, 443290, 709264, 840880, 886580, 1019567, 1773160, 2039134, 3546320, 4078268, 5097835, 8156536, 10195670, 16313072, 20391340, 40782680, 81565360]

約数ペア:

[(1, 81565360), (2, 40782680), (4, 20391340), (5, 16313072), (8, 10195670), (10, 8156536), (16, 5097835), (20, 4078268), (23, 3546320), (40, 2039134), (46, 1773160), (80, 1019567), (92, 886580), (97, 840880), (115, 709264), (184, 443290), (194, 420440), (230, 354632), (368, 221645), (388, 210220), (457, 178480), (460, 177316), (485, 168176), (776, 105110), (914, 89240), (920, 88658), (970, 84088), (1552, 52555), (1828, 44620), (1840, 44329), (1940, 42044), (2231, 36560), (2285, 35696), (3656, 22310), (3880, 21022), (4462, 18280), (4570, 17848), (7312, 11155), (7760, 10511), (8924, 9140)]